Contact person: Business Client

Phone:Show

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Location: red deer, Canada

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Project Overview

We have an Android app already 90% complete.
The final missing component is RFID read/write functionality for STMicro ST25DV04K (ISO15693 / NFC-V tags).

We need an expert Android NFC developer who has direct, hands-on experience with NfcV, ISO15693 commands, and reading/writing memory blocks on compatible RFID tags.

This is not a large project. The UI is finished, the app structure is done.
We only need the NFC logic implemented and integrated into two screens.

What the App Needs To Do
1. Write to RFID Tag

Use Android's built-in NFC-V (NfcV) interface
Write one memory block with one of four possible values:
1000 (demo)
1001 (10-day)
1010 (season)
1100 (permanent)
Tags will be programmed by ski shops by holding the phone ~4 cm from the boot's RFID chip.

2. Read RFID Tag
Read the UID of each tag (left boot + right boot)
Read the stored memory block value
Return this to the existing screen so it can be sent to our backend API

Technical Requirements
To be considered, you must have experience with:
Android NFC API using NfcV
ISO15693 READ_SINGLE_BLOCK (0x20) and WRITE_SINGLE_BLOCK (0x21) commands
Reading/writing to specific memory blocks
Handling tag connection, retries, and exceptions
Testing on real devices

Experience with STMicro’s ST25 series is a bonus, but not required — a developer familiar with ISO15693 can complete this quickly.

Deliverables
NFC read function
Returns UID and memory block content
NFC write function
Writes one of the four pre-defined values to a specific memory block
Integration into existing UI
WRITE button → write value to tag
READ button → return UID + value
Basic error handling
Tag not detected
Write failed
Tag moved too soon, etc.

Expected Duration
An experienced NFC/ISO15693 developer should complete the work in:
10–20 hours total

Do NOT apply if you have never worked with ISO15693 / NfcV.
This is not a first-time learning project.

You Will Be Provided With
Full Android Studio project source
Wireframes + UI layouts
Backend API documentation
The exact memory block to write in the tag
Example values to write

How to Apply

Please include the following in your bid:

Your experience with ISO15693 / NfcV (mandatory).
Describe specific projects where you read/wrote NFC-V tags.
A short explanation of how you would implement WRITE_SINGLE_BLOCK.
Your estimated hours (should be 10–20 hours).
With Confirmation you can begin immediately.

Our Goal
We want this completed fast (within 7–10 days).
If you deliver excellent work, we have ongoing mobile development projects afterward.

Be sure to add RLSB1225 at the beginning of your bid, or it will be considered spam, ignored and removed." (client-provided description)